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Sensors

In this category there are sensors of various types that can be used in DIY projects. Sensors for temperature, humidity, air quality, motion, etc.

Showing 49–72 of 114 results

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100k NTC thermistor
100k NTC thermistor

NTC (Negative Temperature Coefficient) is a  resistor with variable resistance that changes depending on the temperature. The advantage of NTC is that it can measure a large temperature range, and measuring it with a voltage divider is very easy.

Methane, CNG sensor MQ4 breakout
Methane, CNG sensor MQ4 breakout

Have you ever wondered how much natural gas and methane are in your living room? You can easily measure that! The MQ4 breakout board is a simple-to-use sensor that detects the natural gas and methane (CH4) in the air. Once heated to working temperature, it detects changes in air concentrations very quickly between 200 and 10000 ppm.

 

On the through-holes, the DO stands for digital out and AO for analog out. The digital output is obtained by setting a threshold value using the potentiometer. The analog output will depend on the intensity of the gas around the sensor.

 

Product usage tips:

 

The sensor will take 24 hours to preheat to working temperature. The LED on the board will glow when gas is detected, and remain off when it’s not. The board can easily be secured in place using the two mounting holes. It comes with four pins that need to be soldered.

 

Due to its long life, you can use this board for years without much of a thought. Dipping the sensor in water and freezing it will damage it, so avoid doing that. Highly corrosive gases will weaken it significantly, making it useless.

Natural gas, LPG sensor MQ5 breakout
Natural gas, LPG sensor MQ5 breakout

Is your office near a high-traffic area? Are you concerned about the amount of natural and liquefied petroleum gases in your work environment? The MQ5 is a simple-to-use sensor to put your mind at ease. It detects gas particles very quickly between 200 and 10000 ppm.

 

The breakout board works with both digital (DO) and analog signals (AO). The digital output is obtained by setting a threshold value with a potentiometer. The analog output will differ depending on the intensity of the gas.

 

Product usage tips:

 

The sensor takes 24 hours to preheat to optimal working temperature. When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Two mounting holes enable easy mounting to surfaces. The board comes with four pins that need to be soldered.

 

The breakout board boasts a long life so you don’t have to worry about it suddenly breaking. Submerging the sensor underwater and freezing it will damage it beyond repair. Highly corrosive gases will also damage the sensor.

CMOS camera module w/ OV7670
CMOS camera module w/ OV7670

Although many do not know, there is a camera that can work with Arduino / Croduino. It is a CMOS camera, with VGA quality images that are connected to Croduino via I2C. Now it’s your turn to think of the application! Maybe combine with a motion sensor that could be activated if you someone entered the room?

 

CO2 sensor MH-Z19
CO2 sensor MH-Z19

The MH-Z19 is a sensor that uses the non-dispersed infrared principle to detect CO2 in the air. It has built-in temperature compensation and high sensitivity to gas detection, and therefore has extremely accurate readings, and its outputs are on UART and PWM. It consumes little electricity and has a long service life.

 

LPG, Butane sensor MQ6 breakout
LPG, Butane sensor MQ6 breakout

Humans can detect many scents, but can have difficulties when it comes to differentiating gases. That’s why we use sensors like MQ6. It detects LPG and butane in the air. When heated to the optimum working temperature, it detects changes in air concentrations very quickly between 200 and 10000 ppm.

 

The DO pin stands for digital out. AO stands for analog out. The digital output is obtained by setting a threshold value using the potentiometer. The analog output will depend on the intensity of the gas around the sensor.

 

Product usage tips:

 

Preheating the sensor to the optimal working temperature takes 24 hours. The LED on the board will glow when gas is detected. It will remain off when it’s not. The board has two mounting holes for easy attachment to the project. It comes with four pins that need to be soldered.

 

You can use the board for years due to its long life. To prevent damage to the sensor, it should not be dipped in water or frozen. Highly corrosive gases will render the sensor useless. Cooking fumes and cigarette smoke will interfere with the sensor.

Dust sensor PPD42NS PM2.5
Dust sensor PPD42NS PM2.5

PPD42NS is a photoelectric sensor that detects the concentration of dust in the air and thus shows the quality of the air, using light reflection. The PM (eng. Particulate Matter) level in the air shows the amount of physical particles, and the label PM2.5 indicates particles smaller than 2.5um. This sensor provides data collectively, so it will be extremely useful in projects measuring the quality and purity of the air.

CO sensor MQ7 breakout
CO sensor MQ7 breakout

The MQ7 sensor’s sensitivity and selectivity allow it to effectively detect and measure carbon monoxide levels, making it a crucial tool for applications such as gas leakage detection, safety systems, and environmental monitoring. By interfacing the MQ7 sensor with appropriate electronic circuits and microcontrollers like Arduino, you can create systems that provide real-time monitoring and prompt alerts in the presence of hazardous CO concentrations. It needs a bit of time to warm up in order to work correctly.

 

The breakout board works with both digital (DO) and analog signals (AO). The digital output is obtained by setting a threshold value with a potentiometer. The analog output will differ depending on the intensity of the gas.

 

Product usage tips:

 

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Two mounting holes enable easy mounting to surfaces. The board comes with four male headers that need to be soldered.

DHT22 on PCB
DHT22 on PCB

DHT22 is a temperature and humidity sensor with even more precise reading comparing to DHT11. Comes soldered on a PCB.

 

Hall effect sensor breakout with analog output & easyC
Hall effect sensor breakout with analog output & easyC

The Hall effect sensor breakout with analog output is a versatile and reliable sensor module designed to detect and measure magnetic fields. It utilizes the Hall effect principle, where the presence of a magnetic field induces a voltage proportional to the strength and direction of the field.

 

 

This sensor module features an analog output, which provides a continuous voltage signal that varies in response to changes in the magnetic field. The analog output allows for precise and real-time monitoring of magnetic field strength. It is commonly used in applications such as position sensing, current sensing, and speed detection.

 

 

The module is typically powered with a supply voltage ranging from 2.25V to 5V, making it compatible with a wide range of systems.

Hall effect sensor breakout with digital output
Hall effect sensor breakout with digital output

The hall effect sensor (Hall Effect sensor) will be able to detect the magnetic field in its vicinity thanks to the aforementioned physical law. A magnetic field that can be created by a magnet, a current flowing through a conductor or some third source, the Hall effect sensor will recognize each. This sensor has a programmed threshold at which it will change the state of its output signal, so it is a sensor with a digital output.

 

 

Hall effect sensor breakout with digital output & easyC
Hall effect sensor breakout with digital output & easyC

The hall effect sensor (Hall Effect sensor) will be able to detect the magnetic field in its vicinity thanks to the aforementioned physical law. A magnetic field that can be created by a magnet, a current flowing through a conductor or some third source, the Hall effect sensor will recognize each.

 

 

This sensor has a programmed threshold at which it will change the state of its output signal, so it is a sensor with a digital output. Through the easyC connectors, it enables a simple connection with the microcontroller.

 

ADC 16-bit ADS1115 4-channel with PGA breakout
ADC 16-bit ADS1115 4-channel with PGA breakout

ADC (Analog Digital Converter) is a device that reads analog signals (just like the analogRead () function in Arduino IDE) and converts them into a digital signal that can be read by a microcontroller. This breakout is based on the ADS1115 ADC, which reads values in 16-bit resolution, receives a maximum of 3.3V on its inputs and has a total of 4 channels (which can also be used as two differential). Works great with each microcontroller at 5V. It has 2 easyC connectors for easier connection on I2C communication.

Matrix keyboard 3x4
Matrix keyboard 3x4

Matrix keyboard is a system of 12 buttons that are interconnected that allowes us a more complex data input on Croduino/Arduino. With this keyboard you will create whole systems of menus, data entry and settings of various parameters.

Dimensions: 70 x 50 mm

IR obstacle sensor
IR obstacle sensor

This sensor has one fototransistor and one fotodiode in its package. Fotodiode has 2 pins (anode and cathode) which are used to generate an infrared signal. Fototransistor also has 2 pins (collector and emitter) that are used to read the infrared signal that the fotodiode generates. Sensor is most commonly used to read distances that reflects in front of the sensor.

 

• Volrage: 5V
• Output: Analog and digital
• Temperature: from -25°C to 85°C
Dimensions: 10.2 x 5.8mm

IO expander MCP23017 breakout
IO expander MCP23017 breakout

Are you short on IO pins? Looking to increase the number of them? That’s what the GPIO Expander MCP23017 is for! It uses I2C communication to do so. With just two wires, 16 new fully configurable digital IO pins are added to a microcontroller.

 

Due to the jumpers on the board, the I2C address of a device can be changed. Thus, eight breakout boards can be connected to a microcontroller. All of the pins on the expander board have pull-out resistors that can be turned on and off.

Fingerprint sensor
Fingerprint sensor

The fingerprint sensor that allows reading and recognition of a fingerprint. With biometrics addition, your project gets a new level of security. It communicates with your Croduino/Arduino trough series connection and it can save up to 200 different fingerprints. After you lean your finger a photo of your fingerprint is comapred with the base of other saved fingerprints and if the same fingerprint exists it gives a signal for unlocking.

Voltage: 3.3V
Max. current: 120mA
Communication: UART
Dimensions: 50 x 21 x 20 mm

Thermocouple temperature sensor J-type
Thermocouple temperature sensor J-type

Thermocouple is a temperature measuring device, with its range usually bigger than standard sensors. If you’ve ever bought a multimeter and got some kind of temperature sensor, that is the thermocouple.

 

Capacitive soil sensor
Capacitive soil sensor

How many times have you watered your plants and feared you overdid it? With the capacitive soil sensor, those worries are a thing of the past!

 

 

Most cheap soil sensors work on the resistance principle, where there are two prongs and the sensor measures the conductivity between them. They work fine at first, but eventually begin to oxidize due to the exposed metal. Even if they are gold plated! Due to oxidation, the resistance goes up and up, so you have to constantly recalibrate your code. Also, resistance measurements do not always work in loose soil.

 

 

This design with capacitive measurement is superior. Capacitive measurements use only one prong, have no exposed metal, and do not introduce direct current into your plants.

Load cell module high-precision 20kg
Load cell module high-precision 20kg

Load cell is a small device that is able to weigh the load on it. Due to the load, it provides very small output voltages that need to be amplified (eg using op-amp or ADC with a built-in op-amp) to find the use for the module. It incorporates two invariable two variable resistors connected to the Wheatstone Bridge. This sensor is made from high-quality materials, so it does not get affected by high temperature or continous load. You need to connect it with the HX711 to read information with Croduino.


                
Matrix keyboard 4x4
Matrix keyboard 4x4

The Matrix Keyboard is a system of 16 keys that are interconnected, allowing us to provide more complex data input to the Croduino / Arduino. With this keyboard you will create whole systems of menus, data entry and settings of various parameters.

Dimension: 68 x 65 mm

Membrane keyboard 1x1
Membrane keyboard 1x1

A mini version of our larger membrane keyboard that will still be sufficient for projects that need slightly less input.

 

  • The size of the upper part: xcm x xcm
  • Cable lenght: 9cm, flexible
  • Connector: 5-pin
Emergency stop button
Emergency stop button

All real machines have an emergency stop button when pressed the whole machine stops. It can be very useful in case of the danger of someone working on that machine. If you want to install a similar thing on your project, here it is!

Type: DPST
Maximal voltage: 660V
Maximal current: 10A
Button diameter: 40mm
Mounting hole diameter: 22mm
• Dimensions: 60 x 70mm

Membrane keyboard 1x4
Membrane keyboard 1x4

Mini version of our larger membrane keyboard that will sometimes still be sufficient for projects that need a few inputs.

 

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